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In IPv6, which range holds link-local addresses, which are used only within the same link and are always configured automatically on every interface that uses IPv6?

  1. A2001:db8::/32
  2. Bff00::/8
  3. Cfe80::/10
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Answer: C. fe80::/10

Link-local addresses are in the range fe80::/10; they are not forwarded beyond a router and are used only for communication within the same link. They are used for exchanges such as Neighbor Discovery (NDP) and router advertisements, and a host's default gateway is also normally the router's link-local address. 2001:db8::/32 is a range reserved for examples in explanations and documents (documentation addresses). ff00::/8 holds multicast addresses; IPv6 uses multicast instead of broadcast.

  • A. This is the range of documentation addresses, reserved for use in examples in explanations and documents.
  • B. This is the range of multicast addresses.
  • C. Correct. fe80::/10 holds link-local addresses.
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